CAJ | 학술논문

采用单玻片溶剂蒸发法获得了单斜晶系BaCl2·2H2 O （氯化钡）晶体的放射状聚集形貌。聚集体由大量的枝状晶体按照一定的规律聚合而成，枝状形貌有明显的主枝和侧枝，同一主枝的两侧均有相互平行的侧枝，侧枝与主枝的角度约为34°。通过扫描电镜下的形貌观察和分析，结合理论分析和计算，探讨了该晶体聚集体形貌中蕴含的结晶学规律。氯化钡的柱状晶粒的延伸方向为[100]，柱面由平行双面｛001｝和｛010｝组成，且以（001）贴在玻片上生长，相邻晶粒以共格晶界（210）相接合；或柱面由斜方柱｛011｝组成，且以（011）贴在玻片上生长，相邻晶粒以共格晶界（522）相接合。实验观察验证了模型的正确性。
채용단파편용제증발법획득료단사정계BaCl2·2H2 O （록화패）정체적방사상취집형모。취집체유대량적지상정체안조일정적규률취합이성，지상형모유명현적주지화측지，동일주지적량측균유상호평행적측지，측지여주지적각도약위34°。통과소묘전경하적형모관찰화분석，결합이론분석화계산，탐토료해정체취집체형모중온함적결정학규률。록화패적주상정립적연신방향위[100]，주면유평행쌍면｛001｝화｛010｝조성，차이（001）첩재파편상생장，상린정립이공격정계（210）상접합；혹주면유사방주｛011｝조성，차이（011）첩재파편상생장，상린정립이공격정계（522）상접합。실험관찰험증료모형적정학성。
Aggregation patterns of BaCl2·2H2O (barium chloride dihydrate)were obtained by crystal growth in aqueous solution.Based on the aggregate patterns observed by an optical microscope and scanning electron microscope ,and basic law on crystallography and morphology,the crystallographic relationship between crystal-lites in the aggregation pattern were analyzed and the crystallographic model of the aggregation patterns was built According to the results,crystal grows along the direction of [100],and develops simple forms {001}and{010}.It grows on glass slides by lattice net (001 ),and the neighbouring crystallites grow by co-lattice nets (210),or develop simple forms {01 1}and grow on glass slides by lattice net (01 1 ).On eighbouring crystal-lites co-lattice nets it is (522).Comparied with the aggregation in the experiment,a new aggregation model of BaCl2·2H2O is suggested.